Finding the Fourth Proportional to 22,662.43, 31,272.41 and 12,590.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,662.43 : 31,272.41 = 12,590.69 : x
2. Step 2: Convert to fraction form
   22,662.43/31,272.41 = 12,590.69/x
3. Step 3: Cross multiply
   22,662.43x = 31,272.41 × 12,590.69
4. Step 4: Simplify right side
   22,662.43x = 393,741,094.98
5. Step 5: Solve for x
   x = 393,741,094.98/22,662.43
6. Step 6: Final answer
   x = 17,374.18